One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,5,7)(3,8,4,6)(9,10,12,14)(11,15,16,13)(17,18,23,29,22,28,21,27)(19,25,20,26,30,24,31,32)(1,2)(3,6)(4,8)(5,7)(9,11)(10,13)(12,16)(14,15)(17,19,22,30)(18,24,28,25)(20,21,31,23)(26,29,32,27)(1,2)(3,8)(4,6)(5,7)(11,16)(13,15)(17,20,22,31)(18,25,28,24)(19,21,30,23)(26,29,32,27)(1,3,5,4)(2,6,7,8)(10,14)(13,15)(17,20)(18,26)(19,21)(22,31)(23,30)(24,29)(25,27)(28,32)(1,4,5,3)(2,6,7,8)(17,21,22,23)(18,27,28,29)(19,20,30,31)(24,32,25,26)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.